The wife of Thomas Keeble was Elizabeth Green, b. 3 NOV 1845, Harleston, Norfolk, England; Reg. Jan 1846 Stow V12 Page 439; mother Carman.
Her parents were Benjamin Green and Elizabeth Carman. She was baptised at the age of 5 just like Thomas Keeble: 16 Nov 1851 at Redenhall with Harleston and Wortwell, England.
Elizabeth died in 1926 in Palmerston North, New Zealand and is buried with her husband at Terrace End Cemetery.
No one could find their marriage in England because it wasn't in Norfolk but in Greenwich:
FreeBMD Marriages Jun 1868
GREEN Elizabeth Greenwich 1d 1021
Keeble Thomas Greenwich 1d 1021
You can look up these details and more in the New Zealand BDM at
https://www.bdmhistoricalrecords.dia.govt.nz/